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M. D. LUEHRS & D. S. COE. BOLT HBA-DIN@ AND PORGING MACHINE.

No. 409,110. Patented A11-g. 13, l1889.

(No Model.)

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No. 409,110. Patented Aug. 13, 1889..l

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BOLT HEADING AND PORGING MAG-EINE.

Patented Aug. 13. 1889.

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BOLT HEADING AND PORGING MAGHINB.

Patqnted Aug. 1,3, ,1889

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UNITED STATES PATENT OEEICE.

MICHEL D. LUEHRS AND DANIEL S. COE, OF CLEVELAND, OHIO, ASSIGNORS TO THE ACME MACHINERY COMPANY, OF SAME PLACE.

BOLT HEADING AND FORGING VIACHINE.

SPECIFICATION forming part 0f Letters Patent N. 409,110, dated August 13, 1889.

A Application filed March 15, 1889. Serial No. 303,476. (No model.)

To all whom t may concern.-

Be it known that we, MICHEL D. LUEHRS and DANIEL S. COE, citizens of the United States, residing at Cleveland, in the county of Cuyahoga, State of Ohio, have invented certain new and useful Improvements in Bolt Heading and Forging Machines; and we do hereby declare the following to be a full, clear, and exact description of our invention, such as will enable others skilled in the art to which it appertains to make and use the saine.

Our improvements relate to machines for heading bolts and spikes, making rivets, and forging metal for various purposes.

The objects of our invention are to provide improved mechanism whereby the movable gripping-die block is held in a stationary position at either end of its stroke during a sufficient length of time to allow the headertool to complete its operation, to prevent damage to the heading-tool or other parts of the machine, to provide an automatically-operated device for gaging the position of the metal to be operated upon, and also to provide a side cutter to operate in conjunction with the other mechanism of the machine. These objects we accomplish by certain features of construction and combination of parts described herein, and shown inthe accompanying drawings, and the matter constituting our invention is specifically defined in the claims.

In the accompanying drawings, Figure l is a plan View of a machine embodying our invention. Fig. 2 is a side elevation of the same machine. Fig. 3 is a longitudinal vertical section through line 5c @c of Fig. 1. Fig. 4 is a crosssection of machine through line y y of Fig. l. Fig. 5 is a crosssection of machine through line .e e of Fig. 1. Fig. 6 is a side elevation of actuating-bar and connecting-rod for operating the toggle-block and side cutter. Fig. 7 is a plan view of the said bar and rod. Fig. 8 is a view in perspective of the toggle-block and associated toggles. Fig. 9 is an enlarged view, in section, of the safety attachment for the heading-slide; and Fig. l0 is a view of the gage shown in Figs. 1 and 2.

In the different figures of the drawings, A is the main stand or bed plate. On the upper surface of the bed-plate A are grooves or slides a and a.

B is the main shaft.

C and D are cranks on the shaft C.

E and F are sliding bars, which are driven reciprocally in the slides a and a by means of the cranks C and D in conjunction with the connecting-rods E and F.

J is the movable die, and J is the stationary die.

F2 is the heading-tool.

G is a rock-arm, pivoted at H above the sliding bar E on the supports I on the bed of the machine, and is provided at-each end with frictional rollers g and g.

K is a sliding die-block.

L is a toggle-block, and M and M are the toggles.

N is a loose block adjacent to the sidewall of the machine.

O is the side cutter, and R is the gage-arm.

The operation of the machine can be most clearly seen by reference to Figs. l, 3, 4:, 5, 6, and 7, and is as follows: TheV sliding bars F. and F are driven reciprocally in the longitudinal grooves a and a on the bed-plate A by means of v the` cranks C and D in conjunction with the connecting-rods E and F. Said sliding bars are held in place by capplates a2 or by other suitable means. The sliding bar F supports the heading-tool F:2 and carries it backward and forward to the dies J and J The bar E operates the mechanism which causes the movable die-block K to approach and recede from the stationary die J and also operates the side cutting-bar O by means of the incline e3 on its side. The forward part of the rock-arm Gin Figs. 2 and 3 is shown in a depressed position. The sliding bar E has inclines e and e2 and plane surfaces e4 and e5 on its upper face. Immediately above the forward part of the bar E is loosely placed the toggle-block L,vprovided with the toggles M and M. (Shown in Fig. 5.) One of these toggles M engages with the sliding block K, which supports the movable die J. The other toggle M engages with the loose block N adjacent to the side wall of the machine. The rock-arm G is pivoted at H above the sliding bar E on supports I on the ICO bed of the machine. The frictional roller g of Gengages the upper surface of the toggleblock L, and the 'frictional roller .r/ of Gis engaged by the surface of the incline e on the bar E, said incline e being reverse in direction to the incline e?, situated at the opposite end of the bar E. The function of the arm Gis to depress the toggle-block L when the sliding bar E is withdrawn from underneath it. Plane surfaces cAl and ci are left at the top and bottom of the incline e2, by means of which the block L is held stationary at each end of the stroke of the bar E, the length of time thus gained being governed by the length of the incline and said plane surfaces e4 and Said incline e2 and the length of the plane surfaces er1 and ci may be varied by means of removable plates received in the barE, as shown at fr. The sharper the angle of the incline the quicker the block L will be raised, and the longer the plane surface c4 the greater length oi time the block L will remain stationary when raised. The incline e, because of the fixed length of the rock-arm G, will necessarily need to be adjusted to the length of the plane e and the incline e2. It will be Observed that the incline e2 on the upper face of the bar E, as said bar makes its forward stroke, will raise the block L, and by means of the toggles M and M and the loose block K will throw the die .l to the die J. The crank C, which operates the dies through the slide E and the toggle-block L, is set a little in advance of the crank D, which operates the header-slide F. This will pass the slide E under the block L and raise it by means of the incline e2 on the slide F., the toggles will be spread, and the' gripping-die J be thrown toward the dicJ, as already stated, before the heading-tool F2 reaches the end of its stroke. The plane surface c, while und er the block L, sustains said block L stationary and keeps the die J at the end of its stroke until the heading-tool F2 shall have completed its work and retired,when the incline c comes into play under one end of the pivoted rockarm G at g, raises it, and depresses the block L as the sliding bar E is withdrawn, bringing back thev gripping-dic J and the die-block K to their original position.

l-lardened-steel shoes e are placed underneath the sliding bars E and F, and piatesf are placed on the bed-plate to facilitate the movement of said bars and prevent wear of their surfaces. Similar surface strips may face the inclines for the same purpose.

The dies J and J are held in position by the clamps] and j', as shown in Fig. 5.

The heading-tool F2 is supported in a slot in the bar F, and is held in place by a crossbar F3. At the inner end of the tool F2 is placed mechanism to receive the blow on the end of the tool, and is capable of yielding in case toe much stock is fed and thus save damage to the tool and machine. This mechanism is shown in detail in the sectional view, Fig. 9, where a wedge f2 is shown abutting ,block K.

against the inner end of the tool F2'or the loose intervening blockfl, and resting against the `face of the incline/"3. The wedge is held down by means of the spring P, inclosed within the standard P. The spring is adjustable by means of the set-screw and nuts P3. XVhen toc great force is brought against the heading-tool by feeding too much stock or otherwise, the wedge slides up the incline f3 against the spring l?, which allows the l1eading-tool to yield. The spring will return the wedge to its normal position when relieved of the excessive force.

The automatic stock-gage for regulating the position of the metal to be operated upon is shown in detail in Fig. l0. This mechanism consists of the arm R, attached to one end of the rod R', which is pivoted in bearings R2 on the bed-plate. The arm R3 at the opposite end of the rod R is provided with a friction-roller R4. On the main shaft l5 is placed the disk of", having on its face the cam r. The friction-roller RA1 engages the cam r. A coil-spring r2 is placed on the rod R. The revolution of the cam r vibrates the arms R and R3 and withdraws the arm R from before the opening between the dies J and J during the advance of the heading-tool F2. As the heading-tool returns, the coil-spring lr2 on the rod R throws the rod R in front of the dies until the cam r again withdraws it for the advance of the heading-tool. The rod to be upset is pushed in against the arm R as it covers the opening in front of the grippingdies. Then said rod to be upset is gripped by the dies J and J', the gage R withdraws before the advance of the heading-tool, as stated.

The side cutter is seen in Fig. l in front of the bed-plate A, where a part of the intervening overlapping edge of the bed is broken away to more clearly exhibit the cutter, the same being partly carried out in the dotted lines. On theA side and near the outer end of the sliding bar E is an incline c. O is the cutter-bar, which is operated by said incline e3, throwing it by the shearing-edge O.` A pin ois attached to the cutter-bar and extends through a slot in the bed-plate into the The cutter-block is returned by the movement of said block K or by other suitable means.

Heretofore the cutter-bar has been placed under the dies and face-plate and rigidly attached to the sliding block K. This arrangement weakened the bed-plate by having the same cut away to reach the cutter, and caused great annoyance by reason of the collection of scale, dirt, and water on the sliding bar. Our construction avoids these diiiiculties.

Should the cutter be placed under the machine, the incline e would be placed under the bar E or on its opposite side.

Other means than that described maybe adopted for depressing the toggle-block L and withdrawing the movable die-block. A spring may be placed over the toggle-block L IOO IIO

to depress it, or weights may be used for the purpose, in which case the rock-arm G and the incline e on the sliding bar E would be dispensed with. The use of the rock-arm, however, is far preferable to any other method of depressing said block, as it acts promptly and positively at all times.

Having fully described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. The combination, in a bolt heading and forging machine, of the toggle-block L and toggles M and M' with the incline c2 and the plane surfaces c4 and e5 on the sliding bar E, substantially as and for the purpose set forth.

2. The combination, in a bolt heading and forging machine, of the toggle-block L and toggles M and M', and the rockfarni G, with the sliding bar E, having inclines e and e2 and the plane surfaces c4 and c5, substantially as set forth.

3. The combination, in a bolt heading and forging machine, of the sliding bar E, having the incline e2 and. plane surfaces c4 and e5, with the toggle-block L and toggles M and M', and movable die-block K, substantially as set fort-h.

4. The combination, in a bolt heading and forging machine, of the sliding bar E, having the incline e2 and plane surfaces c* and e5, with the driving-shaft B and the connectingrod E', substantially as shown.

5. The combination, in a bolt heading and forging machine, of the toggle-block L and toggles M and M', loose block N, and movable die-block K with the sliding bar E, provided with the incline e2 and plane surfaces e4 and c5, substantially as set forth.

6. The combination of the sliding bar E, provided with the inclines e and e2` and the plane surfaces e* and e5, with t-he toggleblock L and toggles M and M', substantially as shown.

7. The combination of the sliding bar E, provided with the inclines e and e2 and the plane surfaces e* and c5 with the toggleblock and toggles', and movable die-block K, substantially as shown.

S. The combination of the heading-bar F with the wedge f2, interposed between said bar and the incline f3, the incline f3, the spring P, and means for supporting the spring, substantially as shown.

9. The combination of the wedge f2, theincline f3, the spring P, and the heading-bar F with the sliding' bar E,'having inclines and plane surfaces upon its upper side, substantially as shown.

10. The stoclcgage mechanism consisting of thc arm R, the rod R', the arm R3, the disk r', having on its face the cam 0", and the spring r2, substantially as set forth.

11. The side cutting device consisting of the cutting-bar O, the incline e5 on the sliding bar E, and means for returning said cutting-bar, substantially as shown.

12. The combination, in a bolt heading and forging machine, of the side cutting device consisting of the cutting-bar O, and the incline c3 on the sliding bar E, with said sliding bar, the movable die-block K, and the toggleb ook L and toggles M and M', substantially as shown.

13. The combination, in a bolt heading and forging machine, of the stock-gage mechanism, consisting of the arm R, the rod R', the arm R3, the disk r', provided with the cam r, and the spring r2, with the side cutting device consisting of the cutting-bar O, the incline e3 on the sliding bar E, and means for returning said cutting-bar, substantially as shown.

14. The combination, in a heading and forging machine, substantially as shown, of the following parts: the sliding bar E, provided with inclines and plane surfaces on its upper face, the toggle-block L and toggles M and M', the loose block N, the movable block K, the heading-bar, the wedgef2, interposed between the said heading-bar and the incline f3, the spring P, and the rocking arm G, substantially as shown.

15. The combination, substantially as shown, of the following parts: the sliding bar E, provided with inclines and plane surfaces on its upper face, the toggleblock L and toggles M and M', the loose block N, the movable block K, the heading-bar, the wedgel f2, interposed between said heading-bar and the incline f3, the spring P, the rocking arm G, and the stock-gage, consisting of the arm R, the rod R', the arm R3, the disk 0", with cam r on its face, and the spring r2.

16. The combination, substantially as shown, of the sliding bar E, provided with inclines and plane surfaces on its upper face and the incline e3 on its side, the toggle-block Ll and toggles M and M', the loose block N, the headingbar F, the wedge f2, interposed between said heading-bar and the incline f3, the rocking arm G, the stoclcgage arm R, the rod R', the arln R, the disk fr', with cam r on its face, the spring r2, the cutting-bar O, attached to the front bed-plate and operated by means of the incline e3 on the sliding bar E, and means for returning said 'cutting-bar.

MICHEL D. Lunnus. DANIEL s. con.

Attest:

JosEPH A. OsBoRNE, WM. M. MONROE.

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